Combined typewriting and computing machine



I". A. HART. COMBINEUTYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED FEB. 5, 1916.

Patented Oct. 19, 1920.

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F. A. HART.

COMBINEDl TYPEWRITING AND COMPUTING MACHINE.

, APPLICATION FILED FEB. 5. 191e.

UNITED STATES PATENT OFFICE.

rnEnEarcx L nur, or NEwAnx, NEW JEnsEY, AssrGNon To UN'nEEwoon conr- PUTTNG MACHINE confirm, or NEW Yonx, N. Y., A coEroM'noN or NEW YORK.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

i Application led February To all whom t may concern:

Be it known that I, FREDERICK A. HART, a citizen of the United States, residing in Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Combined Typewriting and Computing Machines, of which the following is a specification.

My invention relates to totalizers of typewriter computing machines, and more particularly to the manner of supporting, adjusting and detaching the totalizers. The improvement is herein illustrated as applied to a combined typewriting and computing machine wherein a typewriting machine somewhat analogous to the usual Underwood typewriting machine is employed. It isvusually convenient in building a key-operated computing mechanism which is to be combined with such a machine, to include a totalizer which travels'along step by step with the typewriter carriage. Where such a construction is employed, however, it is necessary to provide that the totalizer be brought exactly into position to aline with the master wheel which operates it. To obtain such a result, it has frequently been found necessary to provide a carriage for the computing mechanismseparate from the typewriting mechanism, or else it has been found necessary in many cases to employ complex devices for locking or steadying the totalizer while engaged with the master wheel. Both of these add to the weight of the moving parts, and to their number.

According to the present invention, the typewriting machine carriage may be made as a unit with a computing machine carriage, and the totalizer may be attached firmly to such a combined carriage, with the result that the whole machine is more rigidly held in position than hitherto considered advantageously possible, while at the same time, by a proper arrangement of the roller bearings for this combined carriage, it has been found possible to hold both the front and rear ends of said carriage alined. with the result that even though the usual Underwood carriage operation and escapement are employed at the back of the carriage, there Specification of Letters Patent.

5, 1916. Serial No. 76,269.

is, nevertheless, no observable tendency to twist the typewriter carriage.

It. has been found possible to obtain a maximum efficiency of rectilinear travel for the front of the typewriter carriage by providing two sets of roller bearings at the front thereof, each set comprising widelyspaced pairs of rollers, with the result that the bearings for the front of the machine all maintain a practically rigid support for the totalizer, while the bearings at the rear of the machine may be similarly widely-spaced. The groups of rear rollers may be so arranged as to get a positive grip in every direction on the rear rail along which the carriage travels.

For the purpose of locating the totalizer or totalizers at the correct position with respect to the carriage, the front part of the carriage is formed or provided with a longitudinal bar, and this bar is provided With a longitudinal slot or channel in which fits a key in the form of a headed stud, whereby Pat-enterica. 19,1920.

turning an ordinary thumb-screw. To assist in adjusting the totalizer properly, by cooperating with the above-described teeth, I have found it advantageous to provide the totalizer with the lugs or guide tongues already referred to, which set into the channel and yet are slidable along said channel, with the result that. by slackening the thumbscrew, the totalizer is released from its teeth and the totalizer is slidable along to any desired point on the carriage. To prevent the totalizer from accidentally becoming detached while being slid, the thumb-screw may hold the totalizer by means of the headed stud, which enters said channel, and the head of which overlaps into slots extending from said channel.

forward Fig. 2 is a front elevation of Fig. 1, with some' of the parts broken away.

Fig. 3 is a detailed plan view of the roller carrier, one end being broken away.

Fig. 4 is a side elevation of Fig. 1, some parts being broken away, so as to expose other parts.

Fig. 5 is a detailed perspective view, showing the totalizer secured tothe carriage rail.

Fig. 6 is a detailed sectional view of a portion of the totalizer, taken on the line 4-4 of Fig. 4, and looking in the direction of the arrow at said line.

Fig. 7 is a fragmentar sectional view taken on the line 2-2 of ig. 2, looking in the direction of the arrow at said line.

Fig. 8 is a detail View of the totalizer mounting, and shows the totalizer held away from the carriage, so that it can be moved lengthwise thereof.

The machine frame 8 has projecting upwardly therefrom standards 9 and 10.l

Brackets 11 are secured to the standards 9 vat the ends of the typewriting machine and have secured thereto a front guide rail 12 by means of screws 12a. A rear guide rail 13 is supported by the standards 10. The typewriter carriage ycomprises end bars 14 and 15 formingI part of the carriage frame 16. The front member on bar 17 of the carriage extends downwardly and is secured to the frame 16 thereof by means of screwsA of support will give great resistance totwisting vibration of the carriage. This is analogous to the structure disclosed in the patent to Barnard, No. 949,723.

A totalizer forming part of a computing mechanism 25, is mounted on the front bar 17 of the typewriter carriage and is provided with register wheels 26, which are caused to be operated, inthe usual way, through intermediate gears 27, by a master wheel 28 journaled in a casing 30; said casing bein secured to the machine frame.

The total1zer25 comprises a front casing 31 provided with a sight opening 32, side plates 33 and 34 and a rear plate 35. To lock the totalizer to the carriage bar, there is provided a headed stud 46 which enters the bar 17 and is adapted to draw the totalinstante 37 and 38, isv loosel mounted on a rod 40 forming part of t e totalizer, said bellcrank held in position lengthwise thereof by sleeves 41 and 42. The arm 37 of the bell-crank projects into a hole 43 formed in the rear plate 35 ofthe totalizer, where it is en aged by a thumb-screw 44 threaded into t e rear plate 35. r1`he arm 38 of the bell-crank operates the stud 46, and for this purpose said arm 38 is received in a slot 45 in the stud 46. rlihe plunger or stud is provided with a head 47, which may be drawn against the inner side of Hanges 48 formed on the front carriage bar 17. rlFhe rear plate 35 is provided with sets of teeth 51, 52, (see Fig. 5), which enga e serrated supports 53 and 54 formed on t e front rail of the carriage. rFhe rear plate 35 is also provided with projections 55 which extend into a '1F-slot 56 formed in the front bar 17 by the flanges 48.

To attach the totalizer to the carriage, the screw 44 is raised, allowing the stud or plunger 46 to be moved outwardly from the rear plate 35 of the totalizer by the spring 50 coiled about the rod 40, which tends to normallyhold it outward. 1f the totalizer is now set on the carriage bar 17 from either end thereof, the parts will bear the relation to each other as shown in Fig. 8, in which the head 47 of the plunger 46 is shown inserted in the slot 56 and behind the flanges 48. 1n this position, steadyingY project1ons 55 fast to the totalizer extend partly into the slot 56 formed in the bar 17. 1n this position, the totalizer can be moved lengthwise of the carriage and adjusted to the proper columnar position. The screw 44 then may be manipulated to swing the lever 36 and cause the plunger 46 to draw the totalizer tightly against the front bar 17. This forces the totalizer into place by forcing V-shaped serrated teeth 51, 52, on the totalizer, to engage with and seat themselves solidly in corresponding teeth orl serrated Supports 53 andv 54 on the carriage bar 17. Since these teeth are advantageously at/letter-space intervals, they both rmly support and aline the totalizer at the proper position relative to the master wheel 28. The teeth 51 and 52 do not ordinarily engage with the teeth 53 and 54 unless the screw 44 is tightened, because the spring 50 holds the totalizer clear of the teeth 53, 54.

In order'to get the best possible eiiect, the row of teeth 51 is at the top edge of the totalizer, while the row of teeth 52 is near the bottom of the totalizer, and the rows of teeth 53, 54, which coperate with them, are located at corresponding heights on the bar 17 The rollers 20 and 21 are rotatably mounted in slots 57 and 58, respectively, in a frame spacers or washers 67. To keep the rollers 20 and 21 properly located, the Spacing frame hasI journaled thereon a pinion 68 on -a short shaft 68a between the bars 65, which meshes with each of the racks 70 and 71; the

rack 70 being carried b the front guide rail l2 on the frame ofl t e machine, and the rack 71 being carried by the front carriage bar 1'7. The racks70 and 71 are held in' slots 73 and held in place jby projections 74 which lit tightly in holes 75. It will be seen that while the-carriage is beingmoved from side to side of the machine, the spacing frame will be driven by its pinion 68, so that the rollers will movehalf the distance of the travel 'of the carriage, because the pinion meshes on one side with the fixed rack 70 and on the other with the driving rack 71.

The frame 16 of the typewriter carriage-is secured to the side bars 14 and 15 by means ofscrews 76 and77 respectively, and com prises cross bars 78 and 79 joined together. by arms 81.

A bar 82 supportedby the standards9 isy provided with the usual scale 83 with which the usual pointer 84=c0acts to indicate the position of the typewriter carriage, the pointer, however, curling up from the carriage over the scale 83.

It will be noted that the rail 13 against whichthe rollersv22, 23, and 24 bear, is at the extreme rear of the machine, and that, as disclosed in said Barnard patent, there which' the rollers 21 run 'areset at rilght vangles to the' tracks 86 on which the rol ers 4 ing machine, there are two sets of tracks 85 are two sets of three rollers each, the setsbeing near the ojposite ends of the t pewriter carriage. ince each group of t ree rollers is arranged to bear substantially at the corners ofy an equilateral triangle inscribed. in the rail 13, said rollers prohibit any vibration at the rear-of the typewriting machine.

For the purpose offgiving great steadiness y t0 the front of the typewrlter carriage and the totalizer, eachroller'21 stands at right angles to its roller v20, and the tracks85 on 20 run, and these tracks 85 and 86 are set at an angle of 45 degrees with the horizontal. To afford additional steadiness to the 4carriage of the combined typewriting and addand 86, one adjacent the bottom ofthe bar 17, and theother adjacent the top thereof, so that one set of tracks is nearly at the top o f the totalizer and the other nearly at the bottom. This gives great steadiness to the front of the typewriter carriage, and consequently to the totalizer 25. a

' carrier or Aspacin j entirelyseparate Afrom-the carrier for the other set of rollers.` l v y .Variations'maybe resorted to within the scope of the invention, and portions of the im rovements ma be used without others.

aving thus4 escribed the invention, I claim: 75 4. In a combined typewriting and comi puting machine, the combination with a totalizer having a` series ofV-shaped teeth at letter-space intervals, of a travellng carriage having a series of V-shapediteeth at letterspace intervals, means includinga lug on said totalizer engaging in a slot in said carria e for maintaining said totalizer with its serles of teeth opposite the series. on said carriage, and means for moving said totalizer into position to cause its teeth to engage with those of the carriage, thereby positioning said totalizer correctly with respect to a letter-space position on said carriage.

2. In a typewriting and computing machine, the combination of a typewriter carriage comprising flanges, a totalizer, means f for rigidly securing the totalizer on the typewriter carriage, said means comprising a thumb screw, coperating teeth. on said toe5 talizer andcarriage, and a carnage-en aging member o erat'ed by said screw w ich coperates wit flanges on the typewriter carriage., i 3. Ina combined typewriting and comseries of teeth `opposite that on said carriage, and means to hold said totalizer away from said carriage to prevent coperatlve engagement between the two series of teeth, 11o and thereby enable movement of said totalizer alongsaid carriage. l

4. In a lcombined typewriting and comuting machine, the4v combination of a totalizer provided with V-shaped teeth, a typewriter carriage, serrated supports for said totalizer -on said carriage, whereby said totalizer is properly positioned on said carriage, means for holding the teeth on the totalizer out of coperative engagement with 12o the serrated supports, and means for guiding the totalizer whlle it is being moved lengthwise of the vcarriage during an adjustment operation.

. 5. In a combined typewriting and computing machine, the combination with a totalizer, of means for supporting and guiding the same, comprising a traveling bar along which said totalizer may be secured in adjusted position, said bar being provided with a V-groove, a stationary bar hav-- ing two rollers and a roller framefor supporting vthe same -in proper relatlve position, a connectingy frame pivoted to both of the roller iframes, a pinion supported on said connecting frame, and racks with which said pinion cooperates, said racks being at the bottoms of. said grooves in the travelvsaid' carriage, sets ofteeth on said bar, a

ing bar and stationary bar,-respective1y.

6. lln a combined typewriting and computing machine,- the ycombination with ,af totalizer, of supporting and guiding meanstheretor, comprising a travelm bar having a vl-groove, means to holdsald-totalizer in adjusted position onfsaid traveling bar, a stationary bar having a complementary V- groove, anti friction members in said grooves, each of 'said anti-friction members comprising rollers and aframe for holding said rollers in proper relative position, a spacing member pivoted to each lof said frames and lconnecting the same, a rack' positioned in a slot at the bottom ot each V- groove, and a 'pinion pivoted on .said connecting member and said racks. ,c l

7. lln a combined typewriting and computing machine, the combinatlon with a traveling carriage, of a bar at the front end of said carriage, sets of teeth on said bar, a totalizer adjustable along said bar and comprising a set of teeth near the upper end thereof adapted to coperate with teeth on the carriage, a second set of teeth on said totalizer near the lower end thereof adapted 'to cooperate with teeth on said carriage, and a headed locking member entering aflshaped groovein said bar adapted to lock said totalizer to said carriage.

8. ln a combined typewriting and vcomputing machine, the combination with a traveling carriage, of a bar at the front end ot said carriage, sets ofteeth on said f bar, a totalizer adjustable along said bar and comprising a set of teeth near] the upper endthereof adapted to cooperate with teeth .on

to cooperate with teeth on said carriage, a' headed locking member entering a T- shaped' groove in said bar adapted to lock said totalizer 4to said carriage, and a lug forming a part of said totalizer coperating with said groove to hold the totalizer horizontally alined. r r

9v. In a combined typewriting andcomyputing machine, the combinatlon with a meshing with both of on the carriage, av secondsetof teeth on said totalizer near the lower end thereof adapted to cooperatel with teeth on said carriage,

-a vheaded .locking lmember entering a T- shaped groove in said bar adapted to lock said totalizer to saidv carriage, and lmeans for normally holdingsaid totalizer teeth clearv of the carriage teeth, whereby the totalizer may slide along the carriage.v

t 'y 10. lln a combined typewriting and computing machine,'the combination with a travelcarriage"of a b ar at'theront end of totalizer adjustable along said bar and lcomprising a set otteeth near `the upper end' thereof adapted to cooperate with teeth on the carriage, a second sei-ot teeth on said' i totalizer near the lower end thereof adapted to coperate -with teeth on said carriage, a

headed locking member entering a lV-shaped.

groove in said bar adapted to lock said totalizer tov said-carriage,'a lug forming apart of said 'totalizer cooperating with said groove vto hold the totalizer horizontally travel-ingicarriage, of a totalizer, means tor supporting said totalizer on said carriage for sliding movement therealong, vand for holding said totalizer out of engagement" with said carriage, means to force said totalizer into engagement with said carriage, and cooperating' devices on said totalizer and said carriage, whereby said totalizer will-be correctly positioned in a predeter mined letter-space position during the move' ment of totalizer into engagement with said carrige.

12. lln a combined typewriting and comroo puting machine, the combination with a type- Y wrlter carriage including Hanges, of a totalizer, -means for firmly securing the total'- izer .on the-typewriter carriage,said means i' including a thumb-screw, and a.v carriage- Y y engaging membercoperating with said the carriage, a second set of teeth on said totalizer near the lower end thereof adapted flanges on thetypewriter carriageand op- .erated by said thumb-screw.Y

13. In a combined typewriting and computing machine, `the combination with a toin .adjusted letter-space'. position on said 'front bar,y said front .bar lhaving V-grooves Inear Aits opposite edges and facing in op- -posite directions, a stationary bar having V- grooves complementary to those of said'front bar, two roller-bearingdevices 1n each runiso , groove, means to prevent longitudinal movement of each rack in the corresponding groove, and a pinion pivoted on each connecting frame and engaging with the racks in the grooves, comprising the runway in which the connecting frame lies.

14. The combination with a support having a longitudinal channel therein, of a totalizer adjustable along said support, a pair of spaced lugs at the ends of the back of said totalizer extending into said channel to prevent a turning movement of said totalizer relative to said support, a device for holding said lugs in said channel to permit the totalizer to slide While held by said lugs, and locking means for securing said totalizer on said support and forming an extension of said device.

15. The combination with a support having a channel extending longitudinally thereof, of a totalizer adjustable along said support, meshing teeth on said support and said totalizer, preventing relative longitudinal movements, lugs on said totalizer engaging said channel, preventing vertical and turning movements, and a clamp engaging 1n said channel adapted to support said to- FiA talizer free of said support teeth, and adapt ed to be set to prevent spreading movements of said totalizer with respect to said support.

16. The combination with a bar comprising a longitudinal channel, of a totalizer adjustably mounted on said bar and including a lug slidable along said channel, a lock of which said lug forms a part adapted to draw said totalizer against the bar, and means for drawing on said lug adapted to positively hold it against release by pressure exerted on the totalizer.

17. The combination with a bar Compris ing a longitudinal channel, of a totalizer adjustably mounted on said bar and including a lug slidable along said channel, a lock of which said lug forms a part adapted to positively draw said totalizer against the bar, and to support it when clear of the bar to permit it to be shifted therealong, and means for drawing on said lug, adapted to positively hold it against release by pressure exerted on the totalizer.

ARTHUR A. JOHNSON, CATHERINE NnwnLL. 

